CS/B.TECH(PWE)/SEM-8/PWE-804A/2012
2012
TECHNOLOGY OF MACHINING & METAL CUTTING
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following : 10 × 1 = 10
i) Segmental or discontinuous chips are formed in the
case of
a) high cutting speed b) brittle work material
c) large rake angle d) low uncut thickness.
ii) For smooth turning for mass production, a suitable
metal removal rate in cc/minute may be
a) more than 200 b) between 150-200
c) between 100-150 d) less than 50.
iii) Signature of a single-point cutting tool starts with the
description of
a) side rake angle
b) front cutting edge angle
c) back rake angle
d) side cutting edge angle.
iv) The value of specific energy for a steel work at a fixed
uncut thickness
a) increases with hardness
b) decreases with hardness
c) increases with cutting speed
d) decreases with cutting speed.
v) With the maximum allowable feed rate, the optimum
machining speed for maximum production in
comparison to that for minimum cost is
a) more b) less
c) equal d) independent.